Later in the game, after discovering flight/advanced flight, you gain the ability to bombard other players with Bombers/Stealth Bombers. You may notice that if you decide to bombard an enemy city that you cannot see (if it's in dark territory where you can't see their defensive unit, make contact with them, etc.), your chances of hitting anything are slim to none.
Here's a tip to help you hit your mark:
Before you start a bombing raid, use a Jet Fighter to scout the area so you can see what you're hitting. This actually increases your odds of having a successful bombing run.
Normally the game would not allow the player to speed up the building of Wonders through hurry methods such as pay citizens and force labour. But it is possible to get around this by first selecting a building option (preferably one with a high production cost), speed up that project using a hurry method, then switch to the Wonder of your choice. Notice that the production shields brought from before the switching is still in place.
Note: may not work in new verision
When another tribe ask you to trade something with them, they will often try and cheat you. Instead of accepting straight away, propose a counter offer. Once the counter offer screen comes up, click the items they are offering so that the 'What will you give me for this' option comes up, then click that. Now they will offer a list of things that (very often) weren't there in the initial trade.
Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Note: This only works in versions earlier than v1.16f. Use a text editor to edit the "script.slc" file in the "\ctp_data\default\gamedata" folder. Add the following lines to the file.
trigger 'DOR_T_Give_Gold' when (IsHumanPlayer(g.player) && (player.1.gold<=200000))
To win in one turn, simply turn all enemy tribes to NONE. After taking one turn you win. Then you can do whatever (get resources, etc.) and all you'll fight are Barbarians.